Letter to the Editor
Accelerated expansion of the higher-dimensional spatially flat universe
Rami Ahmad El-Nabulsi
; College of Mathematics and Information Science, Qujing Normal University, Qujing, Yunnan 655011, PR China
Abstract
We discuss in this work two independent scenarios of a higher-dimensional spatially flat universe. In the 1st scenario, we conjecture that the cosmological constant varies according to the ansatzs Λ = ρ α, α ∈ R, where ρ is the energy density assumed to vary like ρ = DHm, (D, m) ∈ R. In the 2nd scenario, we conjecture that the cosmological constant varies like Λ = Gβ , β ∈ R, where G is the gravitational coupling constant. Both scenarios reveal many interesting and appealing consequences which are discussed in some details.
Keywords
higher-dimensional cosmology; dark energy; accelerated expansion
Hrčak ID:
304612
URI
Publication date:
1.11.2010.
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